Apparatus for the manufacture of sheet metal, metal foil, &amp;c.



N0. '676,8|8. Patented June [8, I90l. J. HEINRICH 8:. H. DORSCH.

APPARATUS FOR THE MANUFACTURE OF SHEET METAL, METAL FOIL, 8w.

(Application filed Aug. 17, 1899.)

(No Model.)

2 Sheets-Sheet l.

Hllli Illll' N0. 676,8l8. Patented Ju'ne l8, IQ'UI. J. HEINRICH & H.DORSCH.

APPARATUS FOR THE MANUFACTURE OF SHEET METAL, METAL FOIL, &c.(Application filed Aug. 17, 1899.) (No Model.) 2 SheetsShe et 2.

. J a MHeST- 0 )(nVenl'QrS UNITED STATES PATENT FFICE.

JACOB HEINRICH AND HEINRICH DORSGH, OF FIIRTH, GERMANY.

APPARATUS FOR THE MANUFACTURE OF SHEET METAL, METAL FOIL, do.

SPECIFICATION forming part of Letters Patent N 0. 676,818, dated June18, 1901. Application filed August 17, 1899. Serial No. 727,577. (Nomodel.)

To all 1072 0112. it may concern:

I Be it known that we, JACOB HEINRICH and HEINRICH DORSCH, subjects ofthe King of Bavaria, and residents of Fiirth, in the Kingdom of Bavaria,Germany, have invented certain new and useful Improvements in Apparatusfor the Manufacture of Sheet Metal, Metal Foil, and the Like, (for whichwe have applied for patents in Germany, dated July 8, 1899, andinFrance, No. 278,895, dated July 17, 1889,) of which the following is aspecification.

This invention relates to metal-beatin g ma: chines; and it consists ofthe improvements which are fully set forth in the followingspecification, and are shown in the accompanying drawings.

It is of the greatest importance in beating metal squares into sheets orleaves that the thin metal pieces between the beaters skins should becaused to expand quickly and evenly. Experience has shown that thisresult is most successfully attained when the blows take placesuccessively at varying distances from the center, and it is the objectof our invention to enable such blows to be struck by mechanical devicesof simple and improved construction.

In the drawings, Figure 1 is a side elevation of a machine embodying ourinvention. Fig. 2 is a plan view of the same. Fig. 3 is a sideelevation, enlarged, of the cam for reciprocating the leaf-carrier. Fig.4c is a plan view of the same, and Fig. 5 is a diagrammatic viewillustrating the action of the beater.

a is an anvil upon which the carriage c is supported and over which itmay be reciprocated.

b is the beater, which may be of any suitable form and operated in anyconvenient manner. We have shown the well-known spring-hammer, which maybe operated in any suitable manner, as from the crank f.

Reciprocations are imparted to the carriage c from a cam m on a shaft Zthrough a rocking lever 19, connected with the carriage cby links g andmaking contact with the cam by a roller-finger 0. A spring 1" maintainsthe roller-finger o in contact with the cam and returns the lever 13 andcarriage c. Carried by the carriage c is the pack-holder, which is freeto rotate therein and is provided with a cogged rim d, which engages andis operated by a gear 6 on the end of a flexible shaft 8.

The shafts l and s are driven in any suitable manner. As shown, theshaft 3 is driven from the crank-shaft f by a belt and pulleys g h, andthe shaft Z is driven from the shaft 8 by gears 2' 70.

To enable successive series of blows to be struck at varying distancesfrom the center, the cam m is constructed, as shown in Figs. 3 and 4,with a series of cam projections AB C D E, the effect of which is tomove the carriage 0 forward to the extent of each cam projection and toreturn it quickly (under the action of the spring 1) when the end ofeach cam projection is reached, while meanwhile the work-holder is beingturned under the action. of the gears d e. The effect of these movementsis illustrated in the diagram shown in Fig. 5. Supposing theroller-finger 0 to be in contact with the lowest portion of the cam-faceA, with the pack-holder in substantially a central position under thebeater I), now as the cam-face A moves under the finger o the carriage cand the pack will be moved forward and successive blows will be struckat the points 2.3 A at varying distances from the center. When the endof the cam A is reached, the finger 0 is drawn by a quick movement tothe lowermost portion of the cam B and the carriage c is returned, sothat approximately the central portion of the pack is again under thebeater, and as the cam B moves under the finger 0 the carriage and workwill be moved as before and successive blows will be struck at varyingdistances from the center; but as the work-holder has meanwhile beenturned under the action of the gears e at these blows will occur in adifferent radial direction, as 5 6 7, and so on successively, and theaction of the cams A B Y O D, 850., will cause a series of successiveblows to be given on varying radial lines. If the work-holder is underconstant rotation by the action of the gears d c, the successive blowsimparted during the operation of each cam-face will not take place instraight radial lines, as shown in the diagram, but in spiral linesradiating from the center.

Owing to the fact that with a square or rectangular sheet some radialdistances will be longer than others, as illustrated in the dia toogram, and to avoid having the beater 1) impart some blows beyond theedge of the sheet we prefer to form the cam projections A B C, &c., ofvarying lengths, so as to vary the extent of movement imparted to thecarriage c to suitthe direction of movement relative to the radiallength of the sheet, as shown in Fig. 4.

To avoid having too many blows imparted at the'center, we do not formall of the cams A B O, &c., so as to return the carriage and holder toan exact central position. In the construction shown in Fig. 45 only onecamface, 0, is shown formed sufficiently low to bring the work exactlyto a central position v under the beater.

Asthe metal square becomes beaten out and expanded it is desirable thatthe blows shall be struck at proportionately greater distances from thecenter. For this purpose the cam m is made conical and is supported withprovision for longitudinal movement, as by a shifting lever n, on itsshaft 1, so that it may be moved to increase the diameter of thecam-face acting on the finger 0, and thus increase the extent ofmovement imparted to the carriage c and the Work proportional to the increase of the metal sheet in diameter.

It is desirable that the fresh pack should be beaten to straighten andflatten it out before the regular beating operation takes place. Forthis purpose we provide an additional cam on adjacent to the cam on,which may be used in connection with the lever 12 and its finger 0 forthis preliminary work. This cam m need not be conical and may beprovided with smaller cam projections.

The details of construction shown maybe varied without departing fromthe invention.

What we claim as new, and desire to secure by Letters Patent, is asfollows:

1. In a metal-beating'machine, the combination of a reciprocatingpack-carrying carriage, with a pack-holder carried thereby and having anindependent movement with reference thereto, and means to shift saidpackhaving an independent rotary movement with reference thereto, andmeans to rotate said pack-holder in its carriage and during itsreciprocation.

3. In a metal-beating machine, the combination of a reciprocatingpack-carrying carriage, a pack-holder carried thereby, and rotatabletherein and gearing d e for rotating said pack-holder in its carriage,substantially as and for the purposes described.

4:. In a metal-beating machine, the combination of a pack-carryingcarriage, a packholder carried thereby and having an independentmovement with reference thereto, means to shift said pack-holder in itscarriage, a cam m having a series of operative cam projections ofvarying length, and powertransmitting connections between said cam onand the carriage whereby reciprocations of successively-varying lengthare imparted to said carriage.

5. In a metal-beating machine, the combination of a pack-carryingcarriage, a conical cam m having a series of cam projections of varyinglength, power-transmittingconnections between said cam m and thecarriage, and means to shift the conical cam m to increase or decreasethe diameter of the projections acting on said power-transmittingconnections and the extent of reciprocations imparted to saidpack-carrying carriage, and the auxiliary cam m, adjacent to the cam onprovided with smaller cam projections substantially as and for thepurpose described.

In testimony whereof we have hereunto set our hands in the presence oftwo witnesses.

JACOB HEINRICH. HEINRICH DORSCH.

Witnesses:

SIGMUND DiiNKELsHt BLE, H. ENGELHARD.

